What is 528 Hz?
528 Hz is the central tone of the modern Solfeggio frequency set, a collection of nine frequencies popularized in the 1990s by Dr. Joseph Puleo and Dr. Leonard Horowitz, who derived them from a numerological reading of verse numbers in the Book of Numbers. Horowitz branded 528 Hz "the love frequency" and claimed it could repair DNA - which made it by far the best-known frequency of the set.
Musically, 528 Hz sits close to C5 (which is 523.25 Hz in standard tuning) - about 16 cents sharp. It is a clear, bright tone in the upper-middle range of hearing, comfortable to listen to at low volume for extended periods.
The DNA repair claim, honestly
There is no credible scientific evidence that any audio frequency repairs DNA - sound waves at listening volume do not interact with molecular bonds that way. The often-cited experiments have not been replicated in peer-reviewed genetics research. One small 2018 study did report reduced anxiety markers in rats exposed to 528 Hz sound, and human studies on relaxing music (of any pitch) consistently show stress reduction.
What that means in practice: if listening to a 528 Hz tone or 528-tuned music helps you relax, that benefit is real - relaxation measurably lowers cortisol and heart rate - even though the mechanism is ordinary calm rather than molecular repair. Use it as a meditation aid on its own terms.
How people use 528 Hz
Common practices include playing the tone quietly during meditation or breathwork, using it as a drone for sound baths alongside singing bowls, sleeping with 528 Hz ambient music, and tuning instruments so that C lands on 528 Hz. The sine wave setting above gives the purest version; triangle adds gentle warmth.
Download the 10-second WAV to loop it in any player, or explore the full nine-tone set on our Solfeggio frequencies generator, which includes 396 Hz, 639 Hz, and the rest of the sequence with background information on each.